Which of the following carbohydrates is a key intermediate in the pentose phosphate pathway?

A Ribulose-5-phosphate ✓
B Xylulose-5-phosphate
C Sedoheptulose-7-phosphate
D Fructose-6-phosphate

Explanation

The pentose phosphate pathway is a metabolic pathway that generates NADPH and pentoses from glucose-6-phosphate. Ribulose-5-phosphate is a key intermediate in this pathway.

Source

Stryer Biochemistry
Carbohydrate Metabolism Biochemistry Pentose Phosphate Pathway Hard MEDICAL Confidence: high